When Adam Saltsman, who would later develop Canabalt, sent Baranowsky an incomplete version of Gravity Hook, which Saltsman intended to keep free of music, Baranowsky decided to write a track for it anyway. When Baranowsky sent "Track A" back to Saltsman, he was really impressed by the music. After finishing the soundtrack of Gravity Hook, Saltsman introduced Baranowsky to Edmund McMillen, for whom he later composed the soundtrack of Super Meat Boy and The Binding of Isaac.[7][8]